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Table 2 Deviations from preoperative mechanical leg axis in supracondylar osteotomies

From: The impact of mal-angulated femoral rotational osteotomies on mechanical leg axis: a computer simulation model

Angulation Error of the Osteotomy Plane

Plane

Error in the Mechanical Leg Axis Alignment per Rotation

10°

15°

20°

30°

+/− 5°

Sagittal

0.4° ± 0.0°

0.8° ± 0.0°

1.1° ± 0.1°

1.5° ± 0.1°

2.1° ± 0.2°

Frontal

0.1° ± 0.1°

0.1° ± 0.1°

0.2° ± 0.2°

0.4° ± 0.2°

0.8° ± 0.3°

+/−  10°

Sagittal

0.8° ± 0.0°

1.5° ± 0.1°

2.2° ± 0.1°

2.9° ± 0.2°

4.2° ± 0.3°

Frontal

0.1° ± 0.1°

0.3° ± 0.2°

0.5° ± 0.3°

0.8° ± 0.4°

1.5° ± 0.6°

+/−  15°

Sagittal

1.1° ± 0.0°

2.2° ± 0.1°

3.3° ± 0.2°

4.4° ± 0.2°

6.3° ± 0.4°

Frontal

0.2° ± 0.1°

0.4° ± 0.3°

0.7° ± 0.5°

1.1° ± 0.7°

2.2° ± 1.0°

+/− 20°

Sagittal

1.5° ± 0.1°

2.9° ± 0.1°

4.4° ± 0.2°

5.8° ± 0.3°

8.4° ± 0.6°

Frontal

0.2° ± 0.2°

0.5° ± 0.5°

0.9° ± 0.7°

1.4° ± 0.9°

2.9° ± 1.3°

+/−  30°

Sagittal

2.2° ± 0.1°

4.3° ± 0.2°

6.4° ± 0.3°

8.5° ± 0.4°

12.4° ± 0.8°

Frontal

0.3° ± 0.3°

0.7° ± 0.7°

1.3° ± 1.0°

2.0° ± 1.3°

4.0° ± 1.9°

  1. Errors in mechanical leg axis greater than 2° (mean value plus standard deviation) have been marked bold